Railway-signal



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M. JENKS. 'RAILWAY SIGNAL.

o v381,24. Patented Apr. 17, 1888.

(No Model...)

' RAILWAY- SIGNAL.

10.381.247., v Paten-ted Apr. @17, lsajq Egg.

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' T, M. JENKS. A v RAILWAY SIGNAL. A r N0.381,2i47. PatentedAp'r. 17,1838.

ummm@ n two pipes A and B. These ,pass at each endy. yss

` under or on thelocomouve, which is fined by into an air-chamber containing a'piston which .have invented a new and useful RailwaySig- UNI-Tien, STATES-1 PATHNTIOFFICE.

THOMAS M. JHNKs, vor CHICAGO,`v ILLINOIS.

yuAlLwM( -s'ylGNAId SPECIFICATION forming part of Leiters Paten: No. 381,247, dated April 1v, Issa.A

Application led October 15, 188?.

To'aZZ whom it may concern:

Be it knownthat I, THOMAS M. JENKs, acg.. l

zen of the United States, residing at Chicago, 1n. the county of Cook and State of Illinois,

nal, of which the following is a specification.

' My invention relates to railway-signals op` erated bythe use of compressed air;y and its objects are to furnish a convenient means of communication between the kconductor and the engineer of a railway passenger-train from each car ofthe train andof automatically no* tifyingy the engineer if the train breaks apart. I attain these objects by the. mechanism illustrated vin the .accompanying drawings, in which4 1 Figure l represents a passengerfcar lying'on one side and having the other side removed and showing the-Signaling machineryr attached to each car. ig.2 represents `the four-way cock andsection of pipe. Fig. 8. showsthe automatic cock in plan view, part in section. Fig. 4 shows the hinge-joint. Fig. 5 shows a plan view of the couplerr and themechanism designed to determine the action of the automatic cock.- Fig. 6 represents a vertical section of the same. Fig. 7 represents a side view of thesame. u

' Thesame letters referto similar parts in the different figures..

Under each passenger-car are fastened the through the cock C, and at each end are continued by the short pipes Al and B." A and B are connected, also, by the hose A andB with the short pipes D of the coupler E, (only half of which appears in Fig. l.) Hose corresponding toA and BV connects the pipes oi"-v the other half of the coupler Ewith pipes corresponding to A and .B under the next car, and so "connection is made at last with two These Ylast two pipes open one into a compressed-airreceiver an air-pump operated by the locomotive-engine, (or by any other suitablemeans) the other is fitted with appliances for ringing a gong in the cab of the locomotive when compressed air is let into the chamber.

is the bell-cord of a passenger-car.

serialnaeaisi. (Nomudem yw G is a bracket at the end of a passengercar.

H H are rollers in the bracket G. l I,v is a cordA having a hook on its upper end to catch on the bell-cord and fastened at its other end to J. f

J is alever fixed tothe end ofthe key K in the cock C.

L is a springfastened to the other end 4of the y j 5 lever J andalso'to the oor of the car.` y

. MM are holesat right angles through key K.

N N are grooves in two opposite sides of the key K.

E is a coupling.

' O O are springs that fasten its parts together.

D D D D are pipes through/1whichfcofm'-k municationis established between the hose A and B y by the respective cocks"'P'in the coupler E.

Pis a four-way cock; P', its stem. lQ is a holethrough it at right angles to its auxis.

` R is a rectangular `-'air-'passage through the cock l?.v Sis also arectangularhole similar to y l the air-passage R. u T isa shorttube designed to connect the airpassages R in the halves of the cock YP when joined for operating.Y y l U is a pin secured to the rody P', which is a continuation of the'outerend of a/half of the cock. P;

V is a vcoiled spring secured atonejendto theouter end of a half of the cock Pand at the'other to theannular. enlargement E of a half of the coupler E at its outer end. vSaid. enlargement Eis recessedon its. outer face to receive the boss of thehandle X, and basan aperture for the rod P to .pass through, the

lower and largerpartof thehandle X having 'a correspondingaperture for the same purpose.

Xfi's a handle whichy turns the stem P and the cock l? around. .A

pass vinto the aperture b inthe coupler E.

ais a groove runningaround the handle X to receive the' end of the screw W, and thus hold the handle X in position. I'

Z isa hinge'on the coupler E, designed yto 1 c is a groove'in thestem P andinlthe'han Y dle X, and da key to connect these partsQf V is a spring fastened to thel handle X.

Y is a pin vfastened to the springVand IOO passing through the handleXinto aholeinfthe:

coupler E. e

The above-described mechanism isoperated as follows: The train being in motion, the airpump fills with compressed air that one of the two lines of pipe and hose that is in commu nication with the pipe under the locomotive leading from the air-receiver and air-punip. When the conductor wants to sound the gong in the cab of the locomotive, he pulls the bellcord F, which, passing down over the rollers H H, in the bracket G and through the hook in the end of 'the cord I, draws it upward, and thus moves the lever J and turns thekey K in the cock C'. The key K is so set that when stationary the holes M M are in line, respectively, with the pipes A and A and B and B, and the cocks P P are so set when the sections of the coupler E are coupled that communication is established through the air-passages R T and the pipe B between the pipes A and A and B and B, respectively. The key K being turned partly around, the groove is brought opposite A and B and A and B, respectively, whereupon the compressed air rushes out of that line of pipe and hose that is in communication with the air-pump and through the groove N into and through the other line of pipe and hose until it passes into the air-chamber containing the piston, which is thus forced forward and made to sound the gong. When the bell-cord F is released, the spring L draws the lever J back into its original position.

The cocks P P are set before coupling", as follows: The stem P is grooved at the line c and passes through the handle X, which is made with a key, d. This key fits in the groove so that the handle may turn the stem P around. When the handle is in vertical position on the stem P the pin Y fits in the notch h in E the enlargement of the outer end of the coupler E. The axis of the groove h is in the saine vertical plane with the longi tudinal axis of the coupler E, and the longitudinal axes -of the air-passages B are in the same plane with each other, and the latter plane is at right angles with the former; hence when the halves of the coupler E are coupled and the handle X is in the place designed for it in each half of the coupler E-that is, set with the pin Y in hthe air-passages R and R in each cock will be continuons, and the holes R will open into the pipe D, thus establishing communication between the sections of pipe and hose A and A and B and B, respectively.

Fig. 4 represents a hingejoint, in which z is the hinge, t the lug, and b the aperture. The halves of the coupler E are united by the above lnge-joint and held together by the springs If a train of cars breaks apart, the spring V forces the stein P toward the face of E till the pin U strikes against the handle X. The pin U has been-placed on the stem P at a distance from the handleX equal to the distance between the holes Q and B; hence communication is established continuous through the holes Q and the pipes T T in the respective halves of the coupler E, and compressed air rushes out of the pipes and hose that contained it in the section of the train next the 7o locomotive into the other pipes and hose in the same section, and thus the gong 1n the cab' i of the locomotive is sounded automatically.

In the half of the coupler E, at rear of the train, the handle X is turned onequarter way 7,= around and the pin Y is set in thenotch corresponding to the groove h. Thus theitwo openings of S in P are brought opposite to the pipes that do not contain compressed air, and thus a vent is established.

I am aware that prior to my invention above described compressed-air railway-signals have been invented. I therefore do not claim such an invention, broadly; but

What I do claim as my invention, and desire 85 to secure by Letters Patent, is

1. In a railway-signal mechanism, the fourway cock C, secured under the end. of .a passenger-car and furnishing communication be- Ween the pipes A and A and B and B', re- 9c spectively, and embracing the key K,.itted at one end with the lever J, said lever being coinbined at one end with the spring L, secured to the bottom of the car, and at the other end with the cord I, which passes up and is se- 95 cured to the bell-cord F, drawn down over the rollers H H in the bracket G at the end of the car,substantially as and for the purposes specified. Y

,2. In a railway-signal mechanism, the four 10o way cock C, containing the key K, pierced at right angles with the holes M M and having the grooves N N extending along a part of its opposite sides, in combination with the pipes A and Aand B and B, extending lengthwise x05 beneath a passenger-car, the said pipes A and B opening into the hose A and B", which extend to and furnish communication with the pipes D D of the coupler E, and through this with corresponding pipes and hose communii ro eating with any air-pump and suitable signaling apparatus of common construction on the locomotive of the train, substantially as and for the purposes stated.

3. In a railway-signal mechanism, the coupi i 5 1er E, consisting of two similar parts, each terminating in a plane face at one end and at the other end in the pipes D D and the annular enlargement E', which is recessed to receive the boss of the handle K and notched at the 12o points h and q, forty-five degrees apart, to rcceive the pin Y, secured to the spring V, which is in turn secured to the upper end of the handle K, said parts containing the respective halves of the cock P and being com- 125 bined with each other face to face vby the springs O O, secured to them, and the hingez on one part passing through the aperture b in the lug t on the other part, substantially as and for the purposes specified.

4. In a railway-signal mechanism, the fourway cock P, formed of two halves fitted in the coupler E, also formed of two halves and having the holes Q passing therethrough at right 1 l l l 351,247 y l iM'WS angles near its outer ends, and the two holes nular enlargement E of the coupler having the 10V 3 R R, parallel with its axis and opening at the screw W, the inner end of which engages with v sides, and the tubes J J, connecting with4 cora groove, a, in the handle X, carrying the key y responding holesin thehalves of the cock, and d,- substantially as and for the purpose de- 5 the hole S, opening at the side of said cock, scribed. l l' f with the spiral springs V upon thev rods ly i, THOMAS JENKS. 1 of the cock, said rods .being longitudinally 'Witnessesz Y y y grooved at c upon their periphery and having f RR. LANDIs, Ithe radial pins u near their ends, and the anl 'J. T. DONAHOE. 

